hieratite

noun

hi·​er·​a·​tite

ˈhīərəˌtīt

plural -s

: a mineral K₂SiF₆ consisting of potassium fluosilicate found as grayish concretions in the fumaroles of Vulcano

Word History

Etymology

Italian, from Hiera (Vulcano), one of the Lipari islands, Italy + Italian -ite

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